/*
 * reserved comment block
 * DO NOT REMOVE OR ALTER!
 */
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
/*
 * Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved.
 */
/*
 * $Id: DOMKeyName.java 1333415 2012-05-03 12:03:51Z coheigea $
 */
package org.jcp.xml.dsig.internal.dom;

import javax.xml.crypto.*;
import javax.xml.crypto.dom.DOMCryptoContext;
import javax.xml.crypto.dsig.*;
import javax.xml.crypto.dsig.keyinfo.KeyName;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;

DOM-based implementation of KeyName.
Author:
Sean Mullan/**
 * DOM-based implementation of KeyName.
 *
 * @author Sean Mullan
 */
public final class DOMKeyName extends DOMStructure implements KeyName {

    private final String name;

    
Creates a DOMKeyName.
Params:
name – the name of the key identifier
Throws:
NullPointerException – if name is null/**
     * Creates a <code>DOMKeyName</code>.
     *
     * @param name the name of the key identifier
     * @throws NullPointerException if <code>name</code> is null
     */
    public DOMKeyName(String name) {
        if (name == null) {
            throw new NullPointerException("name cannot be null");
        }
        this.name = name;
    }

    
Creates a DOMKeyName from a KeyName element.
Params:
knElem – a KeyName element/**
     * Creates a <code>DOMKeyName</code> from a KeyName element.
     *
     * @param knElem a KeyName element
     */
    public DOMKeyName(Element knElem) {
        name = knElem.getFirstChild().getNodeValue();
    }

    public String getName() {
        return name;
    }

    public void marshal(Node parent, String dsPrefix, DOMCryptoContext context)
        throws MarshalException
    {
        Document ownerDoc = DOMUtils.getOwnerDocument(parent);
        // prepend namespace prefix, if necessary
        Element knElem = DOMUtils.createElement(ownerDoc, "KeyName",
                                                XMLSignature.XMLNS, dsPrefix);
        knElem.appendChild(ownerDoc.createTextNode(name));
        parent.appendChild(knElem);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (!(obj instanceof KeyName)) {
            return false;
        }
        KeyName okn = (KeyName)obj;
        return name.equals(okn.getName());
    }

    @Override
    public int hashCode() {
        int result = 17;
        result = 31 * result + name.hashCode();

        return result;
    }
}